Question

optional adj.任选的 (1) 保险范围可以随意选择。(2) 那是你的自由。(3) 这些物品是可以任选的, 但只能选一个。(4) 四段自动变速器是可自由选择的。 When you buy a new car, you can decide which options or choices, you would like. Things like a DVD player mounted in the ceiling are optional, you don't need them for the car to work, and it's up to you if you want to pay more for them. The opposite of optional is mandatory. If you're in high school, going to bed at 8:00 is optional, for your little sister in elementary school, it's mandatory.

Accepted Answer

英 ['ɒpʃənl] 美 ['ɑːpʃənl] (1) The insurance cover is optional.(2) It is optional with you.(3) The goods are optional, but only one.(4) A 4-speed automatic transmission is optional. If you can choose whether or not to do something, it is optional. Extra credit is always optional, death and taxes are not. 1[ADJ 形容词]可选择的；非强制的 If something is optional, you can choose whether or not you do it or have it. A holiday isn't an optional extra. In this stressful, frantic world it's a must...休假并非可有可无。在这个紧张而忙碌的世界，它是必不可少的。Sex education is a sensitive area for some parents, and thus it should remain optional.性教育对某些家长而言是个敏感领域，因此应该保持其非强制性。

英语单词	optional
英美音标	英 ['ɒpʃənl] 美 ['ɑːpʃənl]
中文释义	adj.任选的
英语例句	(1) The insurance cover is optional. (2) It is optional with you. (3) The goods are optional, but only one. (4) A 4-speed automatic transmission is optional.
中文例句	(1) 保险范围可以随意选择。 (2) 那是你的自由。 (3) 这些物品是可以任选的, 但只能选一个。 (4) 四段自动变速器是可自由选择的。
vocabulary简明	If you can choose whether or not to do something, it is optional. Extra credit is always optional, death and taxes are not.
vocabulary扩展	When you buy a new car, you can decide which options or choices, you would like. Things like a DVD player mounted in the ceiling are optional, you don't need them for the car to work, and it's up to you if you want to pay more for them. The opposite of optional is mandatory. If you're in high school, going to bed at 8:00 is optional, for your little sister in elementary school, it's mandatory.
柯林斯解释	1 [ADJ 形容词]可选择的；非强制的 If something is optional, you can choose whether or not you do it or have it. A holiday isn't an optional extra. In this stressful, frantic world it's a must... 休假并非可有可无。在这个紧张而忙碌的世界，它是必不可少的。 Sex education is a sensitive area for some parents, and thus it should remain optional. 性教育对某些家长而言是个敏感领域，因此应该保持其非强制性。

Optional Choose School 英 ɒpʃənl] 美 ɑːpʃənl Adj.任选的 Insurance